Allow closures inside lazy initializers.

tests/language/lazy_static5_test.dart

Index: tests/language/lazy_static5_test.dart
diff --git a/tests/language/function_getter_test.dart b/tests/language/lazy_static5_test.dart
similarity index 70%
copy from tests/language/function_getter_test.dart
copy to tests/language/lazy_static5_test.dart
index d927a045fcf7b1bb511d51e161bb1331916a2e46..00b30bb2afc6295d8bcb596831bf8bb5bb51154e 100644
--- a/tests/language/function_getter_test.dart
+++ b/tests/language/lazy_static5_test.dart
@@ -2,10 +2,9 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-class A {
-  a() => 42;
-}
+final x = (t) => (u) => t + u;
 
 main() {
-  Expect.equals(new A().a(), (new A().a)());
+  Expect.equals(499, x(498)(1));
+  Expect.equals(42, x(39)(3));
 }